7120945 has 16 divisors (see below), whose sum is σ = 9338112. Its totient is φ = 5181120.

The previous prime is 7120933. The next prime is 7120963. The reversal of 7120945 is 5490217.

It is a happy number.

It is not a de Polignac number, because 7120945 - 2⁵ = 7120913 is a prime.

It is a Duffinian number.

7120945 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3844 + ... + 5386.

It is an arithmetic number, because the mean of its divisors is an integer number (583632).

Almost surely, 2^7120945 is an apocalyptic number.

It is an amenable number.

7120945 is a deficient number, since it is larger than the sum of its proper divisors (2217167).

7120945 is a wasteful number, since it uses less digits than its factorization.

7120945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 7120945 is about 2668.5098838116. The cubic root of 7120945 is about 192.3885451404.

The spelling of 7120945 in words is "seven million, one hundred twenty thousand, nine hundred forty-five".